How to save file in database and a directory using flask SQLAlchemy?












1















I want to save age_s, age_e , gender and filename in SQLite database using codes below, but I have a problem.



When I upload the file, my file name is stored in the SQLite database, but the file itself is not stored in my system directory. How can I save a file in my system directory ?



I know that the problem is from the html file but I can not save the file in the directory and save the file name in the database, both actions at the same time.



app.py



@app.route("/new_contact", methods=('GET', 'POST'))
def new_contact():
'''
Create new contact
'''
form = ContactForm()
if form.validate_on_submit():
my_contact = Contact()
form.populate_obj(my_contact)
db.session.add(my_contact)
try:
db.session.commit()
# User info
flash('Contact created correctly', 'success')
return redirect(url_for('contacts'))
except:
db.session.rollback()
flash('Error generating contact.', 'danger')

return render_template('web/new_contact.html', form=form)


new_contact.html



{% extends 'layouts/master.html' %}
{% block title %}New contact{% endblock %}
{% block body %}
<h1>New contact</h1>
<form action="{{ url_for('new_contact') }}" method="post">
{{ generate_fields(form) }}
<input type="submit" class="btn btn-success" value="Add">
</form>

{% endblock %}


forms.py



from flask_wtf import FlaskForm
from wtforms import StringField,SelectField,IntegerField,FileField
from wtforms.ext.sqlalchemy.fields import QuerySelectField
from wtforms.validators import DataRequired, Email, Length
class ContactForm(FlaskForm):
age_s = SelectField(u'age_s', choices=age_types)
age_e = SelectField(u'age_e', choices=age_types1)
#age_e = IntegerField('age_e', validators=[Length(min=-1, max=100, message='You cannot have more than 100 characters')])
gender = SelectField('gender', choices=gender_types)
#filename = StringField('filename', validators=[Length(min=-1, max=20, message='You cannot have more than 20 characters')])
filename = FileField()









share|improve this question





























    1















    I want to save age_s, age_e , gender and filename in SQLite database using codes below, but I have a problem.



    When I upload the file, my file name is stored in the SQLite database, but the file itself is not stored in my system directory. How can I save a file in my system directory ?



    I know that the problem is from the html file but I can not save the file in the directory and save the file name in the database, both actions at the same time.



    app.py



    @app.route("/new_contact", methods=('GET', 'POST'))
    def new_contact():
    '''
    Create new contact
    '''
    form = ContactForm()
    if form.validate_on_submit():
    my_contact = Contact()
    form.populate_obj(my_contact)
    db.session.add(my_contact)
    try:
    db.session.commit()
    # User info
    flash('Contact created correctly', 'success')
    return redirect(url_for('contacts'))
    except:
    db.session.rollback()
    flash('Error generating contact.', 'danger')

    return render_template('web/new_contact.html', form=form)


    new_contact.html



    {% extends 'layouts/master.html' %}
    {% block title %}New contact{% endblock %}
    {% block body %}
    <h1>New contact</h1>
    <form action="{{ url_for('new_contact') }}" method="post">
    {{ generate_fields(form) }}
    <input type="submit" class="btn btn-success" value="Add">
    </form>

    {% endblock %}


    forms.py



    from flask_wtf import FlaskForm
    from wtforms import StringField,SelectField,IntegerField,FileField
    from wtforms.ext.sqlalchemy.fields import QuerySelectField
    from wtforms.validators import DataRequired, Email, Length
    class ContactForm(FlaskForm):
    age_s = SelectField(u'age_s', choices=age_types)
    age_e = SelectField(u'age_e', choices=age_types1)
    #age_e = IntegerField('age_e', validators=[Length(min=-1, max=100, message='You cannot have more than 100 characters')])
    gender = SelectField('gender', choices=gender_types)
    #filename = StringField('filename', validators=[Length(min=-1, max=20, message='You cannot have more than 20 characters')])
    filename = FileField()









    share|improve this question



























      1












      1








      1








      I want to save age_s, age_e , gender and filename in SQLite database using codes below, but I have a problem.



      When I upload the file, my file name is stored in the SQLite database, but the file itself is not stored in my system directory. How can I save a file in my system directory ?



      I know that the problem is from the html file but I can not save the file in the directory and save the file name in the database, both actions at the same time.



      app.py



      @app.route("/new_contact", methods=('GET', 'POST'))
      def new_contact():
      '''
      Create new contact
      '''
      form = ContactForm()
      if form.validate_on_submit():
      my_contact = Contact()
      form.populate_obj(my_contact)
      db.session.add(my_contact)
      try:
      db.session.commit()
      # User info
      flash('Contact created correctly', 'success')
      return redirect(url_for('contacts'))
      except:
      db.session.rollback()
      flash('Error generating contact.', 'danger')

      return render_template('web/new_contact.html', form=form)


      new_contact.html



      {% extends 'layouts/master.html' %}
      {% block title %}New contact{% endblock %}
      {% block body %}
      <h1>New contact</h1>
      <form action="{{ url_for('new_contact') }}" method="post">
      {{ generate_fields(form) }}
      <input type="submit" class="btn btn-success" value="Add">
      </form>

      {% endblock %}


      forms.py



      from flask_wtf import FlaskForm
      from wtforms import StringField,SelectField,IntegerField,FileField
      from wtforms.ext.sqlalchemy.fields import QuerySelectField
      from wtforms.validators import DataRequired, Email, Length
      class ContactForm(FlaskForm):
      age_s = SelectField(u'age_s', choices=age_types)
      age_e = SelectField(u'age_e', choices=age_types1)
      #age_e = IntegerField('age_e', validators=[Length(min=-1, max=100, message='You cannot have more than 100 characters')])
      gender = SelectField('gender', choices=gender_types)
      #filename = StringField('filename', validators=[Length(min=-1, max=20, message='You cannot have more than 20 characters')])
      filename = FileField()









      share|improve this question
















      I want to save age_s, age_e , gender and filename in SQLite database using codes below, but I have a problem.



      When I upload the file, my file name is stored in the SQLite database, but the file itself is not stored in my system directory. How can I save a file in my system directory ?



      I know that the problem is from the html file but I can not save the file in the directory and save the file name in the database, both actions at the same time.



      app.py



      @app.route("/new_contact", methods=('GET', 'POST'))
      def new_contact():
      '''
      Create new contact
      '''
      form = ContactForm()
      if form.validate_on_submit():
      my_contact = Contact()
      form.populate_obj(my_contact)
      db.session.add(my_contact)
      try:
      db.session.commit()
      # User info
      flash('Contact created correctly', 'success')
      return redirect(url_for('contacts'))
      except:
      db.session.rollback()
      flash('Error generating contact.', 'danger')

      return render_template('web/new_contact.html', form=form)


      new_contact.html



      {% extends 'layouts/master.html' %}
      {% block title %}New contact{% endblock %}
      {% block body %}
      <h1>New contact</h1>
      <form action="{{ url_for('new_contact') }}" method="post">
      {{ generate_fields(form) }}
      <input type="submit" class="btn btn-success" value="Add">
      </form>

      {% endblock %}


      forms.py



      from flask_wtf import FlaskForm
      from wtforms import StringField,SelectField,IntegerField,FileField
      from wtforms.ext.sqlalchemy.fields import QuerySelectField
      from wtforms.validators import DataRequired, Email, Length
      class ContactForm(FlaskForm):
      age_s = SelectField(u'age_s', choices=age_types)
      age_e = SelectField(u'age_e', choices=age_types1)
      #age_e = IntegerField('age_e', validators=[Length(min=-1, max=100, message='You cannot have more than 100 characters')])
      gender = SelectField('gender', choices=gender_types)
      #filename = StringField('filename', validators=[Length(min=-1, max=20, message='You cannot have more than 20 characters')])
      filename = FileField()






      python flask flask-sqlalchemy






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      edited Nov 20 '18 at 10:13









      Dinko Pehar

      1,4513424




      1,4513424










      asked Nov 20 '18 at 6:31









      dafi mockdafi mock

      245




      245
























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